import * as echarts from 'echarts'

export function timeFix () {
  const time = new Date()
  const hour = time.getHours()
  return hour < 9 ? '早上好' : hour <= 11 ? '上午好' : hour <= 13 ? '中午好' : hour < 20 ? '下午好' : '晚上好'
}

export function welcome () {
  const arr = ['休息一会儿吧', '准备吃什么呢?', '要不要打一把 DOTA', '我猜你可能累了']
  const index = Math.floor(Math.random() * arr.length)
  return arr[index]
}

/**
 * 触发 window.resize
 */
export function triggerWindowResizeEvent () {
  const event = document.createEvent('HTMLEvents')
  event.initEvent('resize', true, true)
  event.eventType = 'message'
  window.dispatchEvent(event)
}

export function handleScrollHeader (callback) {
  let timer = 0

  let beforeScrollTop = window.pageYOffset
  callback = callback || function () {}
  window.addEventListener(
    'scroll',
    event => {
      clearTimeout(timer)
      timer = setTimeout(() => {
        let direction = 'up'
        const afterScrollTop = window.pageYOffset
        const delta = afterScrollTop - beforeScrollTop
        if (delta === 0) {
          return false
        }
        direction = delta > 0 ? 'down' : 'up'
        callback(direction)
        beforeScrollTop = afterScrollTop
      }, 50)
    },
    false
  )
}

export function isIE () {
  const bw = window.navigator.userAgent
  const compare = (s) => bw.indexOf(s) >= 0
  const ie11 = (() => 'ActiveXObject' in window)()
  return compare('MSIE') || ie11
}

/**
 * Remove loading animate
 * @param id parent element id or class
 * @param timeout
 */
export function removeLoadingAnimate (id = '', timeout = 1500) {
  if (id === '') {
    return
  }
  setTimeout(() => {
    document.body.removeChild(document.getElementById(id))
  }, timeout)
}

// 大小自适应
export function divSizeChange (className, that, arr) {
  var elementResizeDetectorMaker = require('element-resize-detector')
  var erd = elementResizeDetectorMaker()// 使用默认选项（将使用基于对象的方法）。
  var erdUltraFast = elementResizeDetectorMaker({
    strategy: 'scroll',
    callOnAdd: true, // callOnAdd选项，用于确定在添加侦听器时是否应调用它们。默认为true。
    debug: true
  })
  var self = that
  erd.listenTo(document.getElementsByClassName(className), function (element) {
    var width = element.offsetWidth
    var height = element.offsetHeight
    self.tableHeight = height - 100 // 将监听到的宽高进行赋值
    self.tableWidth = width - 20
    arr.forEach((item, index, array) => {
      const obj = document.getElementById(item)
      if (obj) {
        // 执行代码
        const twChart = echarts.init(obj)
        twChart.resize()
      }
    })
  })
}
